Which Dremel bit for exhaust nuts?

[JeffO]

Tomorrow I get my SW chip and cat bypass from Steve and figured I would take off the old cat beforehand. I got five of the nine off with normal tools, sweat, and a bit of blood. But the last four will have to be cut off. Would anyone recommend a 1.5 inch cutoff wheel, die grinder, or the fiberglass disks. Or is there a better way? I do not think a nut cracker will fit and a chisel seems extreme. Thanks in advance and I will post my seat of pants dyno results after it is completed.

[KFC911]

My exhaust nuts laughed at me when I attempted to use a dremel. If you don't have heat (Oxy), can you take them to a muffler shop and let them remove the nuts? I used a combination of die grinder, drill, and lot's of cursing many years ago (I didn't have "heat" at the time)

[ChkbookMechanic]

The dremel might not be strong enough, but I'd go after it with a cutoff wheel. The key to remember is to not force the dremel down onto the bolt. You have to let the cutoff wheel do its job.

I just installed my SW chip and m&k cat bypass last weekend and finally made the last bit of adjustments to the idle yesterday. I am very impressed by the chip.

[wilke3169]

I have a straight carbide bit that I have had for several years and have cut numerous bolts etc. It has never met its match. I just cut through one side then split the nut.

[javadog]

Dremel makes some small cut off wheels, if you don't have access to air tools. They work OK on bolts and nuts.

JR

[David in VA]

I used a Dremel with a cut-off wheel on a couple of nuts which wouldn't budge. Sliced through them very easily.

[JeffO]

I saw the carbide disk on their website and thought that looked real good. I think the cutoff wheel is also the next best thing.

[JeremyD]

Cut off wheel and split the nuts - or if you are lazy - call your local muffler shop and find when their "down time" is - take your new hardware with you - have em cut off the old with a torch - and put on the new - Some places will do this for $20-$40. That makes it really easy.

[DRACO A5OG]

Use a chisel, you will thank me.

Once the rust breaks it will come off easily. I went through 10 grinding wheels on the dremel until I used my chisel set.

Just take care not to chisel into the pipe housing.

[burgermeister]

Oxyacetylene and a cutting tip will get those nuts off in about 15 seconds each.

[rnln]

I did a search in yahoo for "Oxyacetylene" and found this:


and this

yohoo, I wish to have one to work on exhaust system

Originally Posted by burgermeister

Oxyacetylene and a cutting tip will get those nuts off in about 15 seconds each.

[JeffO]

I used the 1 1/2 inch cutoff wheel. It cut thru the nut and the bolt in about 30 seconds. One of the best tool experiances I have ever had. I used the dremel at 30,000 rpm.

[burgermeister]

rnln, those look much better than what I've got in the garage ...